摘要
针对周期复合左/右手(Composite Right/Left-Handed,CRLH)传输线偶极子天线带宽窄的问题,提出一种非周期CRLH传输线的天线模型.该模型主要由N个不同尺寸的LC梯形网络单元组成,实现参差调谐,改善天线的阻抗匹配,拓展天线带宽.设计了一种四单元非周期CRLH偶极子天线,模拟和实验测试结果表明:天线的长度为0.135λ_0时,满足回波损耗|S_(11)|≤-10dB的相对阻抗带宽为8.55%,天线的匹配性能得到了改善.
To solve the problem of narrow bandwidth in electrically small antenna which employs pe-riodic composite right/left-handed（CRLH）transmission line,a new type of electrically small dipole anten-na using non-periodic CRLH transmission line is proposed.The model includes N units of various size LC ladder network cells.Staggered tuning is implemented to improve the antenna impedance matching and broaden the antenna bandwidth.A four units non-periodic CRLH dipole antenna is designed.The simula-tion and experiment show that when the length of the antenna is 0.135λ0 ,8.55% impedance bandwidth with ｜S1 1｜≤-10 dB can be achieved.The matching performance of the antenna is improved to a large ex-tent.
出处
《电波科学学报》
EI
CSCD
北大核心
2016年第5期891-895,共5页
Chinese Journal of Radio Science
基金
国家自然科学基金(61361005
61001020
61461016)
桂林电子科技大学研究生教育创新计划(YJCXS201526)
关键词
非周期结构
阻抗匹配
阻抗带宽
non-periodic
impedance matching
impedance bandwidth
